Electronics Forum: pink ring defects (Page 1 of 4)

ENIG (thru hole ring turns black after wave soldering)

Electronics Forum | Mon Aug 22 23:22:29 EDT 2016 | twhoo

i also notice the carbon and oxygen is high on the defect? Why is that?

Re: Suspected Pink Ring

Electronics Forum | Wed Jul 28 20:14:22 EDT 1999 | Dave F

| While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That would

Re: Suspected Pink Ring

Electronics Forum | Wed Jul 28 16:36:30 EDT 1999 | Earl Moon

| | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That w

Re: Suspected Pink Ring

Electronics Forum | Thu Jul 29 15:35:05 EDT 1999 | Earl Moon

| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou

Re: Suspected Pink Ring

Electronics Forum | Fri Jul 30 10:30:23 EDT 1999 | Wolfgang Busko

| | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That w

Re: Suspected Pink Ring

Electronics Forum | Fri Jul 30 16:06:22 EDT 1999 | Earl Moon

| | | | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That

Re: Suspected Pink Ring

Electronics Forum | Tue Jul 27 17:47:36 EDT 1999 | Earl Moon

| While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That would

Re: Suspected Pink Ring

Electronics Forum | Wed Jul 28 12:02:48 EDT 1999 | Wolfgang Busko

| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou

PCB Delamination

Electronics Forum | Tue Jun 05 06:35:01 EDT 2012 | mosborne1

It's called pink ring.

PCB Delamination

Electronics Forum | Thu Apr 04 06:00:24 EDT 2013 | susanc

Okay, i got the concept. What are advantages of using pink ring? http://www.ccsintlcircuits.com/flexiblepcb.html

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